So what's the lesson to take away from this? Mainly, don't use skinny cables in any system where you care about the sound quality. Also, maybe don't be so quick to judge those who say they hear differences among speaker cables. Sure, many of them are obviously exaggerating these effects, and the ads from high-end cable companies often grossly exaggerate these effects. But the calculations and experiments we did here suggest it's possible they really are hearing something.